But he told the 10-minute hearing: "Forensic samples have been examined and results concluded there was recent use of heroin and that the levels identified were likely to have played a role in her death."

He said Mr Cohen, 23, went with his two sons to spend the weekend at his parents' house in south-east London.

"This is a normal occurrence which enables Peaches and Thomas to complete work in their respective careers," he said.

Peaches spent Saturday afternoon until Sunday morning on her own at home.

"Throughout this period she maintained telephone contact with family and friends, including contact with Thomas' mother to arrange a family activity, but this was cancelled," DCI Fotheringham said.

Video:Heroin's Role In Peaches' Death

"Peaches maintained contact with family and friends throughout Sunday and at 5pm Thomas's father Keith Cohen took the youngest child, Phaedra, back to Wrotham and spent half an hour with Peaches before leaving the child with her."

The last contact with Peaches is believed to have been at 7.45pm on the Sunday when she had a telephone conversation with a friend.

DCI Fotheringham said: "All of the friends and family who had contact with Peaches during this period described how she seemed her normal self and was making plans for the future, including a family outing for her sons for the following weekend.

"There was no cause for concern."

Mr Cohen tried to contact his wife on Monday morning and then drove to the family home with his mother, Sue, and 23-month-old son Astala, arriving at around 1.30pm.

"Thomas entered the property and located Peaches in the spare bedroom," DCI Fotheringham said.

"She was located on the edge of the bed with one leg hanging down to the floor and the other leg tucked underneath her. She was slumped across the bed."

The hearing was adjourned until July 23, when a fuller inquest will take place.

Hours before she died, Peaches posted a picture of her as a youngster with her mother.

Paula Yates died from an accidental heroin overdose in 2000 at the age of 41.